CN107255206A - Composite tubular assembly conveyed for seawater and preparation method thereof - Google Patents
Composite tubular assembly conveyed for seawater and preparation method thereof Download PDFInfo
- Publication number
- CN107255206A CN107255206A CN201710486014.2A CN201710486014A CN107255206A CN 107255206 A CN107255206 A CN 107255206A CN 201710486014 A CN201710486014 A CN 201710486014A CN 107255206 A CN107255206 A CN 107255206A
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- Prior art keywords
- base tube
- anticorrosive coat
- tubular assembly
- layer
- composite tubular
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- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000013535 sea water Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 238000005260 corrosion Methods 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 229920003023 plastic Polymers 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- 230000007797 corrosion Effects 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 48
- 239000003822 epoxy resin Substances 0.000 claims description 15
- 229920000647 polyepoxide Polymers 0.000 claims description 15
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 238000002386 leaching Methods 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000000571 coke Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims 2
- 230000001590 oxidative effect Effects 0.000 claims 2
- 238000002791 soaking Methods 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003345 natural gas Substances 0.000 abstract description 3
- 230000035622 drinking Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 50
- 239000000463 material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 229920002396 Polyurea Polymers 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- AVWRKZWQTYIKIY-UHFFFAOYSA-N urea-1-carboxylic acid Chemical compound NC(=O)NC(O)=O AVWRKZWQTYIKIY-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000009798 Shen-Fu Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/20—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding inserts or for coating articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Abstract
The present invention relates to a kind of composite tubular assembly conveyed for seawater, including base tube and the annular steel mesh being arranged circumferentially on base tube inner wall of end, and it is arranged on the flange of two ends of base tube, the flange and the inner surface setting of base tube connection end have annular groove, the outer surface of the base tube and inner surface are provided with anticorrosive coat, and annular steel mesh is located in the anticorrosive coat of base tube inner surface, and the inner surface anticorrosive coat of base tube is extended in the annular groove to pipe end outside.The method that appeal is used for the composite tubular assembly of seawater conveying is made the invention also provides a kind of, including making the steps such as compound base tube, plastic-coated processing, this kind of composite tubular assembly has undercoating firmly difficult for drop-off and damaged, and corrosion resistance, impact resistance, crushing resistance and the stability technique effect such as preferably, its purposes widely, is applicable to oil, natural gas transportation, work pipes for mining, water drinking tube, the every field such as drainpipe.
Description
Technical field
The present invention relates to a kind of composite tubular assembly conveyed for seawater, and make the composite pipe sections conveyed for seawater
The method of part.
Background technology
The pipeline that past is used for seawater conveying used stainless steel, but the single-phase stainless steel anti-chlorine ion of common material is rotten
The poor-performing of erosion, although the stainless steel of two-phase improves corrosivity of the chlorion to it to a certain extent, uses two-phase
The cost of stainless steel is 3 times of common stainless steel, and the cost for making it is higher, and also a kind of is the plastics for using single material
Pipe, but because its water pressure resistance grade is limited and rigidity is poor etc., reason causes it narrower using scope, it is clear that whether using not
Rust steel or plastic tube can not meet the demand of seawater conveying, therefore, and the manufacture and use of composite pipe are then increasing, and 20
It is domestic to use steel plastic compount pipe standards according to Ministry of Construction's drinking-water from the nineties in century, begin attempt to use steel in seawater transportation art
Plastic composite pipe, its decay resistance, rigid, stress levels, bore scope etc. can meet demand, but existing multiple
The steel pipe and the easily disengaging of the internal plastic coating bed of material for closing tubing cause line clogging, and external anti-corrosion layer uses single epoxide resin material, caused
Its impact resistance is poor, easily causes the problems such as anti-corrosion fails, therefore, how to cause composite pipe to have ideal corrosion resistant
Corrosion, impact resistance and solidification integraty etc. will turn into the problem of needing further investigation, for existing composite pipe,
All also need to further perfect and lift its performance.
" high-temperature wearable antiseepage steel-plastics composite pipe manufacturing process " entitled disclosed in Chinese patent 103041969A is provided
A solution, the manufacturing process comprises the following steps, the processing of A. steel pipes early stage：Use the compression sky dried with removing miscellaneous equipment
Gas sprays the strong steel sand of high pressure by alloy shower nozzle, steel pipe is formed coarse surface, surface iron rust is removed, then to pipe
Material carries out phosphorating treatment, causes tube surfaces formation phosphating coat, completely cuts off air；B. tubing is preheated：It is outstanding using automatic production line
Tubing is traveled at the uniform speed and tubing is heated in heated by natural gas flat long and narrow formula baking oven by chaining；C. Inner tubing layers are sprayed resistance to
Anti-corrosion SPUA powdery paints in mill type；D. to anti-corrosion SPUA powdery paints outside tubing outer layer spraying abrasion-proof type；
E. coating is heating and curing using chain-type suspension movement, finished product detected, qualified rear packaging and warehousing.The manufacture work
The beneficial effect of skill is：Plastic coated composite steel pipe has performed to the advantage of steel pipe and plastic tube ultimate attainment inside and outside powder.Wear-resisting type
Anti-corrosion SPUA powdery paints, using cold coating technology as core, by the superhard nonmetallic and gold with self-lubricating property
Belong to material
Material is composited with poly- allophanic acid fat, curing agent, and powdery paints is coated in steel tube surface, forms one layer with superpower resistance to
The protective layer of mill, high temperature resistant and superior antiseptic property, makes oil pipe, well casing, pumps seawater pipe not only with the excellent machinery of steel pipe
Performance（Such as：High intensity, high rigidity）, but also with excellent anti-corrosion, wear-resisting, heat-resisting, resistance to boiling water, resistance to alkali lye, anti-soil water enchroachment (invasion)
Corrosion energy；Polyureas is distinguished into plastic-coated inside and outside tubing as anticorrosive coat in the manufacturing process, it is understood that, although polyurea materials
With characteristics such as preferable corrosion-resistant, wear-resisting, high temperature resistants, but be due to polyureas reaction speed it is too fast, thus exist to basal plane
Wetting capacity it is poor, easily influence and the adhesive force of basal plane, and the combination of interlayer is also undesirable, coating internal stress is larger, separately
Outside, polyureas is in spraying process, the presence of NCO and liquid ammonia etc., still belongs to poisonous, flavored strong and stimulating material, because
This, can this kind of manufacturing process produce preferable technique effect and need further to inquire into.
The content of the invention
It is an object of the invention to provide in a kind of undercoating by by base tube add steel mesh and with the flange plastic-coated of pipe end
It is defeated that the one kind for the problems such as integral mode solves undercoating easy to fall off, damage, impact resistance and poor adhesive force is used for seawater
The composite tubular assembly sent.
It is a further object of the present invention to provide a kind of method for the composite tubular assembly for making and being conveyed for seawater.
A kind of composite tubular assembly for seawater conveying proposed by the invention includes base tube and is arranged circumferentially at base tube
Annular steel mesh on inner wall of end, and it is arranged on the flange of two ends of base tube, the flange and the inner surface of base tube connection end
Annular groove is provided with, the outer surface of the base tube and inner surface are provided with anticorrosive coat, and annular steel mesh is located at table in base tube
In the anticorrosive coat in face, and the inner surface anticorrosive coat of base tube is extended in the annular groove to pipe end outside.
The base tube surface corrosion-resistant layer cleaner is included positioned at the epoxy resin layer of bottom and positioned at middle adhesive layer, and
Positioned at outermost polyethylene layer.
The base tube includes high-frequency welded steel pipe or seamless steel pipe.
The rectangle steel mesh bending that the annular steel mesh is made up of a diameter of 1.5~2.0mm steel wire is constituted, and the annular
The length of steel mesh is set to 100-300mm.
The method that making proposed by the invention is used for the composite tubular assembly that seawater is conveyed includes making compound base tube and painting
Modeling is handled, wherein, make compound base tube：Qualified steel pipe is chosen first, while making annular steel mesh, and passes through electric resistance welding
The inwall that annular steel mesh is soldered to the steel tube end part by technique is connect, then connection end inner surface setting is had to the method for annular groove
Orchid is respectively welded to two ends of steel pipe；Plastic-coated processing：The compound base tube made is put into heating after bead to set
It is standby to be preheated, after preheating by tubing by chucking device be put into for soak modeling fluid-bed at a high speed rotation carry out outer surface with
Plastic-coated and the levelling processing of inner surface anticorrosive coat, wherein, the leaching for composite base pipe internal surface anticorrosive coat is moulded, should be by compound base tube
The anticorrosive coat of inner surface is extended in the annular groove of the flanged ends inner surface setting, and after plasticizing and solidification, inspection
It is to be used for the composite tubular assembly that seawater is conveyed to test qualified tubing.
In the plastic-coated process step, outer surface of steel tube anticorrosive coat should soak modeling in three times, i.e., first on the top layer of compound base tube
Leaching modeling epoxy resin layer, and in the top layer leaching modeling adhesive layer of epoxy resin layer, finally in the poly- second of top layer leaching modeling of adhesive layer
Alkene layer, forms the corrosion-resistant coating of three-decker, and epoxy resin layer and adhesive layer should be under conditions of 200 °C not after coke
Carry out plastic-coated.
Described to make in the step of being combined base tube, made annular steel mesh length should be set to 100-300mm.
A kind of composite tubular assembly conveyed for seawater proposed by the invention, by by the anticorrosive coat in base tube to pipe end
Outside is extended in the annular groove of flange so that the end of base tube can be fully wrapped around by interior anticorrosive coat, reaches that non-flanged is sudden and violent
Dew, and when tubing is connected by flange, the anticorrosive coat of base tube inner surface will not be squeezed modification and damage, in addition, by
In being provided with annular steel mesh on the inwall in base tube, and combined together with interior anticorrosive coat so that interior anticorrosive coat is reinforced, and is increased
Its adhesive force with base tube inwall is added, can effectively prevent interior anticorrosive coat from coming off to cause the situation of line clogging；The present invention
In, the anticorrosive coat of base tube outer surface uses three layers of anticorrosion structure being made up of epoxy resin, binding agent, polyethylene, not only
With ideal Corrosion Protection, and with higher stability and impact resistance shape so that its purposes widely, can
Suitable for oil, natural gas transportation, work pipes for mining, water drinking tube, the various fields such as drainpipe.
Brief description of the drawings
Accompanying drawing 1 is the Structure of cross section signal of one embodiment for being used for the composite tubular assembly that seawater is conveyed proposed by the invention
Figure；
Accompanying drawing 2 is the structural representation of steel mesh in accompanying drawing 1；
Accompanying drawing 3 is the cross-sectional view of flange in accompanying drawing 1.
Embodiment
Shenfu Fig. 1 to 3, three width accompanying drawings provide one embodiment of the composite tubular assembly for being used for seawater conveying proposed by the invention
Outward appearance concrete structure.The composite pipe include base tube 1 and the annular steel mesh 11 that is circumferentially positioned on base tube inner wall of end with
And it is arranged on the flange 2 of 1 two ends of base tube, the inner surface setting of the flange 2 and the connection end of base tube 1 has annular recessed
Groove 21, and the outer surface of the base tube 1 and inner surface are respectively arranged with external anti-corrosion layer 3 and interior anticorrosive coat 4, wherein, the annular
Steel mesh 11 is located in base tube 1 in anticorrosive coat 4, and the effect of the annular steel mesh 11 is：Combined together with interior 4 layers of anti-corrosion so that
Interior anticorrosive coat 4 is reinforced, and adds its adhesive force with the inwall of base tube 1, can effectively prevent interior anticorrosive coat 4 from coming off to lead
Cause the situation of line clogging；The interior anticorrosive coat 4 of the base tube 1 is extended in the annular groove 21 to pipe end outside so that base
The end of pipe can be fully wrapped around by interior anticorrosive coat, reaches that non-flanged exposes, and when being connected by flange 2, the interior of base tube 1 is prevented
Rotten layer 4 will not be squeezed modification and come off or damage；The external anti-corrosion layer 3 includes the epoxy resin positioned at the top layer of base tube 1
Layer 31 and the adhesive layer 32 positioned at the top layer of epoxy resin layer 31, and the polyethylene layer 33 positioned at the top layer of bond layer 32, should
The external anti-corrosion layer 3 of three-decker is planted, not only with ideal Corrosion Protection, and with higher stability and resistance to punching
Hitting property；The base tube 1 is using physical characteristic relatively stable high-frequency welded steel pipe or seamless steel pipe；The annular steel mesh 11 is by straight
Footpath is constituted for the rectangle steel mesh bending that 1.5~2.0mm steel wire is made, and the length of the annular steel mesh 11 can be according to base tube 1
Length be adjusted, be traditionally arranged to be 100-300mm.The composite tubular assembly that this kind is used for seawater conveying is not only able to effectively
The problems such as interior anticorrosive coat comes off is avoided, and with preferably corrosion resistance, impact resistance, crushing resistance and stability, with non-
Normal preferably technique effect.
The method for making the composite tubular assembly conveyed for seawater comprises the following steps：Choose first qualified
Steel pipe is as base tube 1, while making annular steel mesh 11, the length of made annular steel mesh 11 should be entered according to the length of base tube 1
Row adjustment, is traditionally arranged to be 100-300mm, annular steel mesh 11 then is respectively welded into the base tube by resistance welding technology
On the inwall of 1 two ends, the flange 2 that connection end inner surface setting has annular groove 21 is then respectively welded to base tube 1
Two ends；The compound base tube made is put into firing equipment after bead to be preheated, by composite base after preheating
Pipe by chucking device be put into for soak modeling fluid-bed at a high speed rotation carry out the plastic-coated of external anti-corrosion layer 3 and interior anticorrosive coat 4 with
Levelling processing, wherein, external anti-corrosion layer 3 should soak modeling in three times, i.e., first soaked on the top layer of compound base tube and mould epoxy resin layer 31, and
The top layer leaching modeling adhesive layer 32 of epoxy resin layer 31, finally in the top layer leaching modeling polyethylene layer 33 of adhesive layer 32, and epoxy
Resin bed 31 and adhesive layer 32 should not carry out plastic-coated after coke under conditions of 200 °C, for anticorrosive coat 4 in compound base tube
Leaching modeling, in the annular groove 21 that the interior anticorrosive coat 4 of compound base tube should be extended to the connection end inner surface setting of flange 2,
Complete after above-mentioned steps, after plasticizing and solidification, examine the qualified composite tubular assembly as conveyed for seawater；This method will
The interior anticorrosive coat 4 of base tube 1 is combined together with annular steel mesh 11 so that interior anticorrosive coat 4 is effectively reinforced, and adds itself and base
The adhesive force of the inwall of pipe 1, can effectively prevent interior anticorrosive coat 4 from coming off to cause the situation of line clogging, while by base tube 1
Anticorrosive coat 4 is extended in the annular groove 21 of the flange 2 so that the end of base tube 1 can be fully wrapped around by interior anticorrosive coat 4,
Reach that non-flanged exposes, and when the component is connected with each other by flange, the interior anticorrosive coat of base tube 1 will not be squeezed
Modification and damage, therefore, making proposed by the invention be used for the composite pipe for conveying seawater method have it is ideal
Technique effect.
Claims (7)
1. the composite tubular assembly conveyed for seawater, it is characterised in that：The composite tubular assembly includes base tube and is arranged circumferentially at
Annular steel mesh on base tube inner wall of end, and the flange of two ends of base tube is arranged on, the flange is interior with base tube connection end
Surface is provided with annular groove, and the outer surface of the base tube and inner surface are provided with anticorrosive coat, and annular steel mesh is located at base tube
In the anticorrosive coat of inner surface, and the inner surface anticorrosive coat of base tube is extended in the annular groove to pipe end outside.
2. composite tubular assembly according to claim 1, it is characterised in that：The base tube surface corrosion-resistant layer cleaner includes being located at bottom
The epoxy resin layer of layer and the adhesive layer positioned at centre, and positioned at outermost polyethylene layer.
3. composite tubular assembly according to claim 1, it is characterised in that：The base tube includes high-frequency welded steel pipe or seamless
Steel pipe.
4. composite tubular assembly according to claim 1, it is characterised in that：The annular steel mesh is by a diameter of 1.5~2.0mm
The rectangle steel mesh bending that is made of steel wire constitute, and the length of the annular steel mesh is set to 100-300mm.
5. it is used for the method for the composite tubular assembly that seawater is conveyed described in claim 1 for making, it is characterised in that including following
Step：
Make compound base tube：Qualified steel pipe is chosen first, while annular steel mesh is made, and will by resistance welding technology
Annular steel mesh is respectively welded on the inwall of two ends of steel pipe, and connection end inner surface setting then is had into annular groove
Flange is respectively welded to two ends of steel pipe；
Plastic-coated processing：The compound base tube made is put into firing equipment after bead to be preheated, by tubing after preheating
It is put into by chucking device and rotates the plastic-coated and stream that carry out outer surface and inner surface anticorrosive coat in the fluid-bed moulded at a high speed for soaking
Flat processing, wherein, the leaching for composite base pipe internal surface anticorrosive coat is moulded, and the anticorrosive coat of composite base pipe internal surface should be extended into institute
In the annular groove for stating flanged ends inner surface setting, and after plasticizing and solidification, it is to be used for sea to examine qualified tubing
The composite tubular assembly of water conveying.
6. method according to claim 5, it is characterised in that：In the plastic-coated process step, outer surface of steel tube anticorrosive coat
Modeling should be soaked in three times, i.e., modeling epoxy resin layer is first soaked on the top layer of compound base tube, and bond in the top layer leaching modeling of epoxy resin layer
Oxidant layer, finally moulds polyethylene layer, the corrosion-resistant coating of formation three-decker, and epoxy resin layer and viscous in the top layer leaching of adhesive layer
Knot oxidant layer should not carry out plastic-coated after coke under conditions of 200 °C.
7. method according to claim 5, it is characterised in that：It is described to make in the step of being combined base tube, made ring
Shape steel mesh length should be set to 100-300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486014.2A CN107255206A (en) | 2017-06-23 | 2017-06-23 | Composite tubular assembly conveyed for seawater and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486014.2A CN107255206A (en) | 2017-06-23 | 2017-06-23 | Composite tubular assembly conveyed for seawater and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107255206A true CN107255206A (en) | 2017-10-17 |
Family
ID=60023726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710486014.2A Pending CN107255206A (en) | 2017-06-23 | 2017-06-23 | Composite tubular assembly conveyed for seawater and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107255206A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107825070A (en) * | 2017-10-20 | 2018-03-23 | 中交广州航道局有限公司 | Dredging pipe and its processing method |
| CN108825886A (en) * | 2018-07-06 | 2018-11-16 | 何敏 | A kind of one-shot forming technique of inside and outside double corrosion-proof plastic-coated multiple tubes |
| CN113103613A (en) * | 2021-03-31 | 2021-07-13 | 山东山氢新能源科技有限公司 | Method for processing hydrogen transmission pipeline |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2047081A5 (en) * | 1969-05-09 | 1971-03-12 | Mac Creary Tire Rubber C | Corrosion resistant layered structure |
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| CN107825070A (en) * | 2017-10-20 | 2018-03-23 | 中交广州航道局有限公司 | Dredging pipe and its processing method |
| CN108825886A (en) * | 2018-07-06 | 2018-11-16 | 何敏 | A kind of one-shot forming technique of inside and outside double corrosion-proof plastic-coated multiple tubes |
| CN113103613A (en) * | 2021-03-31 | 2021-07-13 | 山东山氢新能源科技有限公司 | Method for processing hydrogen transmission pipeline |
| CN113103613B (en) * | 2021-03-31 | 2022-10-04 | 山东山氢新能源科技有限公司 | Method for processing hydrogen transmission pipeline |
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